feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/flaskbehaviour.txt

@@ -0,0 +1,35 @@
+URL: https://wiki.studiominus.nl/internalReference/FlaskBehaviour.html
+Title: People Playground Modding - FlaskBehaviour
+==================================================
+
+public class FlaskBehaviour
+Inherits BloodContainer
+Controls flasks
+Fields
+public float Capacity
+Amount of liquid units that can be held
+
+public SerialisableDistribution StartLiquid
+[SkipSerialisation]
+The liquid to start with, represented as a BloodContainer.SerialisableDistribution
+
+public LiquidContainerController LiquidContainer
+[SkipSerialisation]
+Reference to the visual liquid simulation controller
+
+public bool NewlySpawned
+Is this a completely new flask or was it pasted/loaded?
+
+Properties
+public override Vector2 Limits
+No description provided
+
+public override bool AllowsOverflow
+No description provided
+
+Methods
+protected override void Start()
+No description provided
+
+protected override void Update()
+No description provided